Low Water Cut-Offs
Electronic LWCO
List Price $285.00 $218.35 / eachSKU: MH1114C5 in stockMcDonnell & Miller model number 750T-120 is an electronic low water cut-off control unit for use on hot water boilers and as secondary protection on steam boilers. This cut-off unit is 120 volt and features an automatic reset, test switch, and LED low water indicator light. It is for use with McDonnell & Miller remote sensors (SKUs MI1550 and MI1551). Explore More- Manufacturer : McDonnell & Miller
- Part Number : 176206
List Price $285.00 $218.35 / each- List Price $290.00 $222.18 / eachSKU: MH1114D13 in stockMcDonnell & Miller model number 750MT-120 is an electronic low water cut-off control unit for use on hot water boilers and as secondary protection on steam boilers. This cut-off unit is 120 volt and features a manual reset, test switch, and LED low water indicator light. It is for use with McDonnell & Miller remote sensors (SKUs MI1550 and MI1551). Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 176207
List Price $290.00 $222.18 / each - List Price $410.00 $314.12 / eachSKU: MH1114E5 in stockMcDonnell & Miller model number 751P-MT-120 is an electronic low water cut-off control unit, with built-in PA-800 probe, for use on hot water boilers and as secondary protection on steam boilers. This cut-off unit is 120 volt and features a manual reset and test switch. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 176234
List Price $410.00 $314.12 / each - List Price $425.00 $325.62 / eachSKU: MH1114F2 in stockMcDonnell & Miller model number 751P-MT-U-120 is an electronic low water cut-off control unit, with built-in PA-800U probe, for use on hot water boilers and as secondary protection on steam boilers. This cut-off unit is 120 volt and features a manual reset and test switch. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 176214
List Price $425.00 $325.62 / each - List Price $405.00 $310.29 / eachSKU: MH1114GShips within 2 weeksMcDonnell & Miller Series 751P 120V probe-type low water cut-off with short probe that provides protection against low water conditions for commercial and industrial applications. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 176295
List Price $405.00 $310.29 / each - List Price $405.00 $310.29 / eachSKU: MH1114H3 in stockMcDonnell & Miller Series 751P 24V probe-type low water cut-off with standard probe that provides protection against low water conditions for commercial and industrial applications. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 176296
List Price $405.00 $310.29 / each - List Price $405.00 $310.29 / eachSKU: MH1114JShips within 1 business daysMcDonnell & Miller Series 751P 24V probe-type low water cut-off with short probe that provides protection against low water conditions for commercial and industrial applications. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 176297
List Price $405.00 $310.29 / each - List Price $430.00 $329.45 / eachSKU: MH1172AShips within 8 weeksMcDonnell & Miller 153601 model PSE-801-M-120 low water cut-off 120Vac with test switch and standard probe for steam boilers. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 153601
List Price $430.00 $329.45 / each - List Price $440.00 $337.11 / eachSKU: MH1172CShips within 2 weeksMcDonnell & Miller model number PS-801-M-U-24 is an electronic low water cut-off control unit, with extended barrel probe, for use on steam boilers. This cut-off unit is 120 volt and features a manual reset, test switch, and LED low water indicator light. Its maximum water temperature is 250°F and pressure is 15 psi. It is a compact unit with 3/4" MIP connections and a 2-1/8" probe. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 153603
List Price $440.00 $337.11 / each - List Price $430.00 $329.45 / eachSKU: MH1173AShips within 2 weeksMcDonnell & Miller model number PSE-802M-24 is an electronic low water cut-off control unit, with probe, for use on steam boilers. This cut-off unit is 24 volt and features a manual reset, test switch, and LED low water indicator light. Its maximum water temperature is 250°F and pressure is 15 psi. It is a compact unit with 3/4" MIP connections and a 2-1/8" probe. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 153602
List Price $430.00 $329.45 / each - List Price $440.00 $337.11 / eachSKU: MH1173DShips within 2 weeksMcDonnell & Miller model number PS-802-M-U-24 is an electronic low water cut-off control unit, with extended barrel probe, for use on steam boilers. This cut-off unit is 24 volt and features a manual reset, test switch, and LED low water indicator light. Its maximum water temperature is 250°F and pressure is 15 psi. It is a compact unit with 3/4" MIP connections and a 2-1/8" probe. Explore More
- Manufacturer : McDonnell & Miller
- Part Number : 153604
List Price $440.00 $337.11 / each - List Price $291.00 $236.59 / eachSKU: HY10054 in stockHydrolevel Safguard model 550SV low water cut-off with manual reset, test button, and short probe. This unit interrupts power in a low water condition. The burner circuit locks-out if water remains below probe for 30 seconds. A test button checks burner circuit to ensure proper control operation and lock-out function without lowering the water level. Explore More
- Manufacturer : Hydrolevel
- Part Number : 45-551
List Price $291.00 $236.59 / each - List Price $293.49 $220.12 / eachSKU: HY1006Ships within 1 business daysHydrolevel Safguard model 650SV low water cut-off with automatic reset, test button, and short probe. This unit interrupts power immediately in a low water condition. The burner circuit locks-out if water remains below probe for 30 seconds. A test button checks burner circuit to ensure proper control operation without lowering the water level. Explore More
- Manufacturer : Hydrolevel
- Part Number : 650SV
List Price $293.49 $220.12 / each - List Price $314.82 $243.73 / eachSKU: HY10074 in stockHydrolevel Safguard model 550 low water cut-off with manual reset and test button. This unit interrupts power in a low water condition. The burner circuit locks-out if water remains below probe for 30 seconds. A test button checks burner circuit to ensure proper control operation and lock-out function without lowering the water level. Explore More
- Manufacturer : Hydrolevel
- Part Number : 45-550
List Price $314.82 $243.73 / each - List Price $293.47 $220.10 / eachSKU: HY10082 in stockHydrolevel Safguard model 650 low water cut-off with automatic reset and test button. This unit interrupts power immediately in a low water condition. The burner circuit locks-out if water remains below probe for 30 seconds. A test button checks burner circuit to ensure proper control operation without lowering the water level. Explore More
- Manufacturer : Hydrolevel
- Part Number : 45-650
List Price $293.47 $220.10 / each - List Price $291.00 $225.29 / eachSKU: HY11351 in stockHydrolevel 45-501 Safgard model 500SV 24Vac low water cut-off with manual reset, test button & light, and EL1214-SV sensing probe for commercial hot water boilers. Explore More
- Manufacturer : Hydrolevel
- Part Number : 45-501
List Price $291.00 $225.29 / each - List Price $187.00 $144.77 / eachSKU: HY1061Ships within 2 business daysHydrolevel 45-1100M Safgard model 1100M 24Vac compact low water cut-off with manual reset, test button & light, and wire harness for residential boilers. Explore More
- Manufacturer : Hydrolevel
- Part Number : 45-1100M
List Price $187.00 $144.77 / each - List Price $324.97 $137.92 / eachSKU: HY10104 in stockHydrolevel Safguard model 170 low water cut-off for 160 psi. This LWCO is 120 VAC, has a switching capacity of 5.8 FLA and 34.8 LRA, and has SPDT switch contacts. The 170 Series interrupts power immediately in a low water condition and automatically restarts the burner on return of normal water level. Explore More
- Manufacturer : Hydrolevel
- Part Number : 170
List Price $324.97 $137.92 / each - List Price $230.69 $137.92 / eachSKU: HY10114 in stockHydrolevel Safguard model 170SV low water cut-off with short probe for 160 psi. This LWCO is 120 VAC, has a switching capacity of 5.8 FLA and 34.8 LRA, and has SPDT switch contacts. The 170 Series interrupts power immediately in a low water condition and automatically restarts the burner on return of normal water level. Explore More
- Manufacturer : Hydrolevel
- Part Number : 170SV
List Price $230.69 $137.92 / each - List Price $305.55 $229.17 / eachSKU: HY1001Ships within 1 business daysHydrolevel Safgard 500 24 volt low water cut off with a manual reset, burner circuit test button, and LED indicating lights for hot water boilers. Explore More
- Manufacturer : Hydrolevel
- Part Number : 45-500
List Price $305.55 $229.17 / each
